Thread: Proporting value

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Anyone have a clue as to how you go about adjusting the Proportioning value in a new system. I would assume that there must be a rough and final adjustment procedure available.

jc

If you have a brake pressure gauge, then check the pressure in the rear and in the front. Front pressure should be higher as it will be doing about 60-70% of the braking. Without a gauge, just read the instructions and set the proportioning valve by feel on a test drive. Turning the knob in is usually less pressure to the brakes fed off the line the valve is installed in.

Find a big empty parking lot, and try some really hard stops. Do your rear brakes lock up too soon? If so, turn down the pressure to the rear brakes. If all four wheels lock up about the same time, you're good. Don't touch the proportioning valve. In an emergency stop, you want all four brakes working at 100%. During normal driving, you won't be able to feel any difference in your brakes, no matter where you put the knob.